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WorksheetsSLOT 3
Total questions: 12
Worksheet time: 6mins
Blockchain is
Cryptocurrency
Token
A type of database
Distributed and Decentralized
What is blockchain primarily known for?
Video streaming technology
Underlying technology of cryptocurrencies
A brand of computer hardware
A type of social media platform
Blocks in a blockchain are linked using what?
Stories
Pointers
Chain
Hashes
Who is the mysterious figure credited with creating Bitcoin?
Elon Musk
Bill Gates
Satoshi Nakamoto
Mark Zuckerberg
Which property of blockchain makes it nearly impossible to change past transaction data?
Flexibility
Immutability
Versatility
Permeability
Who can view transactions on a public blockchain?
Only the sender and receiver
Only the government
Anyone
Only people who use cryptocurrency
Why is blockchain considered secure?
Because it uses strong passwords
Due to encryption and decentralization
It uses anti-virus software
All users have admin rights
What do miners do in a blockchain?
Dig for physical coins
Design new crypto logos
Verify and add transactions to the blockchain
Sell cryptocurrency
In the context of blockchain, what do "miners" primarily use to perform Proof of Work?
Marketing strategies
Calculating skills
Computational power
Mathematical skills
Why is Proof of Work considered energy-intensive?
Miners have to work in shifts
It involves physical labor
Computers compete to solve complex mathematical problems
Miners use green technology
What do miners receive as a reward for successfully mining a block using Proof of Work?
A certificate of appreciation
Free software
Cryptocurrency
A high score
Which of these is NOT a feature of a smart contract?
Self-executing
Transparent
Can be edited after deployment
Immutable
